(11) A provision authorizing, whether by bylaw, agreement, or otherwise, the indemnification of agents (as defined in Section 317) in excess of that expressly permitted by Section 317 for those agents of the corporation for breach of duty to the corporation and its stockholders, provided, however, that the provision may not provide for indemnification of any agent for any acts or omissions or transactions from which a director may not be relieved of liability as set forth in the exception to paragraph (10) or as to circumstances in which indemnity is expressly prohibited by Section 317.
Notwithstanding this subdivision, in the case of a close corporation any of the provisions referred to above may be validly included in a shareholders' agreement. Notwithstanding this subdivision, bylaws may require for all or any actions by the board the affirmative vote of a majority of the authorized number of directors. Nothing contained in this subdivision shall affect the enforceability, as between the parties thereto, of any lawful agreement not otherwise contrary to public policy.